A tail gas absorber

Abstract

This utility model discloses a tail gas absorption tower, which includes an outer shell and an inlet pipe. The inlet pipe is disposed on the outer periphery of the bottom end of the outer shell. A base is disposed at the bottom end of the outer shell, and a waste liquid tank is disposed at the lower end of the base. A spray pipe is disposed at the top end of the outer shell, and an adsorption mechanism is disposed between the spray pipe and the inlet pipe. A recovery pipe is disposed at the upper end of the base, and a disassembly mechanism is disposed between the recovery pipe and the waste liquid tank. This tail gas absorption tower, through the adsorption mechanism disposed between the spray pipe and the inlet pipe, enables gas exchange inside the absorption tower, and also allows gas flow when the tail gas pressure is insufficient. The disassembly mechanism disposed between the recovery pipe and the waste liquid tank allows the waste liquid tank to be replaced, and the condition of the waste liquid inside the tank can be determined based on the tail gas condition at the time of replacement, so as to better treat the waste liquid.

Description

Technical Field

[0001] This utility model relates to the field of chemical production technology, specifically to a tail gas absorption tower. Background Technology

[0002] In the preparation of high-purity electronic-grade lithium fluoride, lithium fluoride is generated by reacting hydrofluoric acid with lithium compounds. This process produces exhaust gas containing hydrogen fluoride (HF), water vapor, and a small amount of impurity gases.

[0003] Existing technology, patent document CN220424984U, discloses a tail gas absorption tower, comprising a base, an absorption tower body, and an exchange liquid storage tank. The absorption tower body is fixedly installed on the top of the base. An air inlet pipe is fixedly connected to one side of the bottom of the absorption tower body. An air inlet fan is installed inside the air inlet pipe, and a protective cover is fixedly installed at one end of the air inlet pipe. An exchange liquid storage tank is located on one side of the absorption tower body, and a water pump is fixedly installed on the top of the exchange liquid storage tank. A liquid outlet pipe is fixedly installed on the top of the water pump, and the other end of the liquid outlet pipe penetrates one side of the absorption tower body and extends into the interior of the absorption tower body. An exhaust pipe is fixedly installed on one side of the top of the absorption tower body. This invention allows for more uniform spraying of the exchange liquid, enabling the tail gas to fully react with the exchange liquid, effectively preventing insufficient reaction between the exchange liquid and the tail gas, which could lead to environmental pollution from the emitted tail gas.

[0004] Although the device has many beneficial effects, the following problems still exist: the air vents on the adsorption layer of the device will gradually be blocked by the exchange liquid as the exhaust gas pressure is insufficient, which will affect the exhaust gas treatment efficiency.

[0005] Secondly, the device discharges waste liquid through a drain pipe, and the waste liquid is not treated separately, which will affect the subsequent treatment of the waste liquid. Utility Model Content

[0006] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0007] 1. Technical problems to be solved:

[0008] In order to address the issue mentioned above, the ventilation holes on the adsorption layer of this device will gradually be blocked by the exchange liquid as the exhaust gas pressure becomes insufficient, thus affecting the exhaust gas treatment efficiency.

[0009] Secondly, the device discharges waste liquid through a drain pipe, and the waste liquid is not treated separately, which will affect the subsequent treatment of the waste liquid. Therefore, this utility model was proposed.

[0010] Therefore, the purpose of this utility model is to provide a tail gas absorption tower, which can prevent the air vents on the adsorption layer from being blocked when the tail gas pressure is insufficient, and can also process waste liquid in batches.

[0011] 2. Technical Solution:

[0012] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0013] A tail gas absorption tower includes an outer shell and an inlet pipe. The inlet pipe is connected to the outer periphery of the bottom end of the outer shell. A base is welded to the bottom end of the outer shell. A waste liquid tank is disposed at the lower end of the base. A spray pipe is disposed at the top end of the outer shell. An adsorption mechanism is disposed between the spray pipe and the inlet pipe. A recovery pipe is disposed at the upper end of the base. A disassembly mechanism is disposed between the recovery pipe and the waste liquid tank. The adsorption mechanism can accelerate the tail gas treatment efficiency, and the disassembly mechanism can be disassembled in a sealed manner without affecting the tail gas treatment process.

[0014] In a preferred embodiment of the exhaust gas absorption tower of this utility model, the adsorption mechanism includes a limiting plate, which is welded inside the outer shell. A spring is welded to the lower end of the limiting plate, and an adsorption plate is welded to the lower end of the spring. The adsorption plate has multiple ventilation holes and can slide up and down inside the outer shell.

[0015] In a preferred embodiment of the exhaust gas absorption tower of this utility model, the disassembly mechanism includes an installation groove, which is opened at the lower end of the base. The inner wall of the installation groove is provided with an internal thread. An installation component is welded to the upper end of the waste liquid tank. An external thread is provided on the outer periphery of the installation component. A sealing mechanism is provided at the upper end of the installation groove.

[0016] In a preferred embodiment of the exhaust gas absorption tower of this utility model, the sealing mechanism includes:

[0017] A chute is formed at the upper end of the base, and a sealing plate is tenon-jointed inside the chute. The sealing plate is larger than the outer diameter of the lower opening of the recycling pipe.

[0018] A pull rod, one end of which is welded to the outer periphery of the sealing plate;

[0019] A rotating shaft, one end of which is welded to the other end of the pull rod, is rotatably connected to the base;

[0020] A handle, which is welded to the other end of the shaft.

[0021] In a preferred embodiment of the exhaust gas absorption tower of this utility model, a guide plate is provided above the recovery pipe, the guide plate is welded inside the outer shell, a protective cover is fitted on the outside of the air inlet pipe, a support frame is welded to the bottom of the base, and an air outlet pipe is connected to the upper end of the outer shell.

[0022] In a preferred embodiment of the exhaust gas absorption tower of this utility model, a motor is threadedly connected to the outer shell, and the motor is rotatably connected to a rotating belt on the spray pipe, which can make the spray pipe rotate.

[0023] In a preferred embodiment of the exhaust gas absorption tower of this utility model, the outer wall of the spray pipe is connected to one end of the delivery pipe, the delivery pipe passes through the outer wall of the outer shell, the other end of the delivery pipe is connected to a water pump, and the lower end of the water pump is connected to a storage tank.

[0024] 3. Beneficial effects:

[0025] Compared with the prior art, the beneficial effects of this utility model are:

[0026] This type of exhaust gas absorption tower uses an adsorption mechanism installed between the liquid spray pipe and the air inlet pipe to exchange gases inside the tower, while also allowing gas flow when the exhaust gas pressure is insufficient.

[0027] This type of exhaust gas absorption tower allows the waste liquid tank to be replaced via a disassembly mechanism located between the recovery pipe and the waste liquid tank. The condition of the waste liquid inside the tank can be determined based on the exhaust gas condition during replacement, thus enabling better waste liquid treatment. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0029] Figure 1 This is a schematic diagram of the internal structure of a tail gas absorption tower according to the present invention;

[0030] Figure 2 This is a schematic diagram of the overall structure of a tail gas absorption tower according to the present invention;

[0031] Figure 3 This is a schematic diagram of the adsorption mechanism of a tail gas absorption tower according to the present invention.

[0032] Figure 4 This is a schematic diagram of the disassembly mechanism of a tail gas absorption tower according to the present invention.

[0033] Figure 5 This is a schematic diagram of the sealing mechanism of a tail gas absorption tower according to the present invention.

[0034] The following are the labels in the diagram: 1. Outer shell; 2. Air inlet pipe; 3. Base; 4. Waste liquid tank; 5. Spray pipe; 6. Recovery pipe; 7. Guide plate; 8. Protective cover; 9. Support frame; 10. Air outlet pipe; 11. Motor; 12. Infusion pipe; 13. Water pump; 14. Storage tank; 100. Adsorption mechanism; 101. Limiting plate; 102. Spring; 103. Adsorption plate; 104. Vent hole; 200. Disassembly mechanism; 201. Mounting groove; 202. Internal thread; 203. Mounting component; 204. External thread; 210. Sealing mechanism; 211. Slide groove; 212. Sealing plate; 213. Pull rod; 214. Rotating shaft; 215. Handle. Detailed Implementation

[0035] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0036] This utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not be construed as limiting the scope of protection of this utility model. In actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0037] The orientation or positional relationship indicated in the terminology is based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing the present invention and simplifying the description. It is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0038] The term "connection method" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] The embodiments of this utility model will now be described in further detail with reference to the accompanying drawings.

[0040] This utility model provides an overall structural schematic diagram of an embodiment of a tail gas absorption tower, including:

[0041] Please see Figures 1-5This embodiment of a tail gas absorption tower includes an outer shell 1 and an inlet pipe 2. The inlet pipe 2 is connected to the outer periphery of the bottom end of the outer shell 1. A base 3 is welded to the bottom end of the outer shell 1. A waste liquid tank 4 is provided at the lower end of the base 3. A spray pipe 5 is provided at the top end of the outer shell 1. An adsorption mechanism 100 is provided between the spray pipe 5 and the inlet pipe 2. A recovery pipe 6 is provided at the upper end of the base 3. A disassembly mechanism 200 is provided between the recovery pipe 6 and the waste liquid tank 4. The adsorption mechanism 100 can accelerate the tail gas treatment efficiency, and the disassembly mechanism 200 can be disassembled in a sealed manner without affecting the tail gas treatment process.

[0042] It is worth noting that, specifically, for adsorption purposes, the adsorption mechanism 100 includes a limiting plate 101, which is welded inside the outer shell 1. A spring 102 is welded to the lower end of the limiting plate 101, and an adsorption plate 103 is welded to the lower end of the spring 102. The adsorption plate 103 has multiple ventilation holes 104, and the adsorption plate 103 can slide up and down inside the outer shell 1.

[0043] Next, for disassembly, specifically, the disassembly mechanism 200 includes a mounting groove 201, which is located at the lower end of the base 3. The inner wall of the mounting groove 201 is provided with an internal thread 202. An installation part 203 is welded to the upper end of the waste liquid tank 4. An external thread 204 is provided on the outer periphery of the installation part 203. A sealing mechanism 210 is provided at the upper end of the mounting groove 201.

[0044] Meanwhile, for sealing purposes, specifically, the sealing mechanism 210 includes:

[0045] The slide 211 is located on the upper end of the base 3. A sealing plate 212 is tenon-jointed inside the slide 211. The outer diameter of the sealing plate 212 is larger than the outer diameter of the lower opening of the recycling pipe 6.

[0046] One end of the pull rod 213 is welded to the outer periphery of the sealing plate 212;

[0047] One end of the rotating shaft 214 is welded to the other end of the pull rod 213, and the rotating shaft 214 is rotatably connected to the base 3;

[0048] Handle 215 is welded to the other end of shaft 214.

[0049] Furthermore, for recycling purposes, specifically, a guide plate 7 is provided above the recycling pipe 6, the guide plate 7 is welded inside the outer shell 1, a protective cover 8 is fitted on the outside of the air inlet pipe 2, a support frame 9 is welded to the bottom of the base 3, and an air outlet pipe 10 is connected to the upper end of the outer shell 1.

[0050] It is worth noting that, specifically, in order to rotate, a motor 11 is threadedly connected to the outer casing 1, and the motor 11 is rotatably connected to the rotating component belt on the spray pipe 5, which can make the spray pipe 5 rotate.

[0051] Finally, for the purpose of spraying liquid, specifically, the outer wall of the spray pipe 5 is connected to the infusion pipe 12, the infusion pipe 12 passes through the outer wall of the outer shell 1, one end of the infusion pipe 12 is connected to the outer wall of the spray pipe 5, and the other end of the infusion pipe 12 is connected to the water pump 13, and the lower end of the water pump 13 is connected to the storage tank 14.

[0052] Combination Figures 1-5 The specific usage process of the tail gas absorption tower in this embodiment is as follows:

[0053] 1: According to the actual use, after threading the waste liquid tank 4 into the mounting groove 201 on the base 3, start the motor 11 and water pump 13 to make the spray pipe 5 rotate and spray liquid, and deliver the exhaust gas to the air inlet pipe 2. After the exhaust gas passes through the guide plate 7, it is adsorbed by the adsorption plate 103. Normal gas and treated gas will rise and squeeze the adsorption plate 103, the spring 102 will contract, and the gas will flow out from the vent hole 104 and then be discharged from the air outlet pipe 10.

[0054] 2: When the exhaust gas pressure decreases, the spring 102 rebounds, the adsorption plate 103 vibrates, and the exchange liquid suddenly falls from the vent 104, keeping the vent 104 unobstructed.

[0055] 3: When the waste liquid tank 4 needs to be replaced, turn the handle 215 to make the sealing plate 212 block the bottom of the recovery pipe 6, turn the waste liquid tank 4 to make the mounting part 203 and the mounting groove 201 fall off, record the gas condition in the tower at this time, and match it to the waste liquid tank 4. Thread the new waste liquid tank 4 into the mounting groove 201, turn the handle 215 to separate the sealing plate 212 from the recovery pipe 6.

[0056] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A tail gas absorption tower, characterized in that, The device includes an outer shell (1) and an air inlet pipe (2). The air inlet pipe (2) is located on the outer periphery of the bottom end of the outer shell (1). A base (3) is located at the bottom end of the outer shell (1). A waste liquid tank (4) is located at the lower end of the base (3). A spray pipe (5) is located at the top inside the outer shell (1). An adsorption mechanism (100) is located between the spray pipe (5) and the air inlet pipe (2). A recovery pipe (6) is located at the upper end of the base (3). A disassembly mechanism (200) is located between the recovery pipe (6) and the waste liquid tank (4).

2. The tail gas absorption tower according to claim 1, characterized in that, The adsorption mechanism (100) includes a limiting plate (101), which is disposed inside the outer shell (1). A spring (102) is disposed at the lower end of the limiting plate (101), and an adsorption plate (103) is disposed at the lower end of the spring (102). A plurality of ventilation holes (104) are disposed on the adsorption plate (103).

3. The tail gas absorption tower according to claim 2, characterized in that, The disassembly mechanism (200) includes a mounting groove (201), which is located at the lower end of the base (3). The inner wall of the mounting groove (201) is provided with an internal thread (202). The upper end of the waste liquid tank (4) is provided with a mounting component (203), and the outer periphery of the mounting component (203) is provided with an external thread (204). The upper end of the mounting groove (201) is provided with a sealing mechanism (210).

4. The tail gas absorption tower according to claim 3, characterized in that, The sealing mechanism (210) includes: A sliding groove (211) is provided on the upper end of the base (3), and a sealing plate (212) is provided inside the sliding groove (211); A pull rod (213), one end of which is disposed on the outer periphery of the sealing plate (212); A rotating shaft (214), one end of which is disposed at the other end of the pull rod (213); A handle (215) is provided at the other end of the pivot (214).

5. The tail gas absorption tower according to claim 4, characterized in that, A guide plate (7) is provided above the recovery pipe (6), the guide plate (7) is located inside the outer shell (1), a protective cover (8) is provided on the outside of the air inlet pipe (2), a support frame (9) is provided at the bottom of the base (3), and an air outlet pipe (10) is provided at the top of the outer shell (1).

6. The tail gas absorption tower according to claim 5, characterized in that, A motor (11) is provided on the outer casing (1).

7. The tail gas absorption tower according to claim 6, characterized in that, The outer wall of the spray pipe (5) is provided with an infusion pipe (12). One end of the infusion pipe (12) is provided on the outer wall of the spray pipe (5), and the infusion pipe (12) is provided on the outer wall of the outer shell (1). The other end of the infusion pipe (12) is provided with a water pump (13), and the lower end of the water pump (13) is provided with a storage tank (14).

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